At the start, his gross margin was €713/ha and the target is to increase this by 2018 to €1,035/ha.
Output is the main driver of profitability, according to Pearse Kelly, Teagasc's head of drystock knowledge transfer.
It is envisaged that John's gross output will increase by over a third, from 848kg/ha to 1,154kg/ha.
Along with some changes in his grassland management in terms of establishing a paddock system, getting cattle out earlier and reseeding some old pastures, Mr Lalor will increase his stocking rate from just under 2LU/ha up to 2.58LU/ha.
When the system is in full production, the plan is that he will be buying in 52 Friesian bull calves at €125/head and 52 Angus/Hereford heifers calves at €250/head.
He will also aim to sell 50 bullocks at 330kg carcase weight at an anticipated €3.70/kg, 25 heifers at 260kg carcass weight and €4.10/kg, with the remaining 25 heifers at 250kg carcass weight and €4/kg.
The importance of meeting production targets in a tight margin system and the lack of room for error were the recurrent themes of the farm walk, which attracted around 300 farmers, a very respectable figure given the rare fine weather.
Mr Lalor's calves are reared on milk replacer plus concentrate for the first 10 weeks and he explained how he had previously skimped on milk replacer in a bid to keep costs down but had then failed to reach his production targets.
So he now intends moving from one bag to "at least 1.5 bags" and is also introducing a vaccination programme.
He has only bought his Angus/Hereford heifer calves in the past couple of weeks. He would like to buy them earlier so they are stronger going to grass in the first season, as per the Teagasc recommendations. However, he said that they were just not available.
Green Acres programme co-ordinator Gordon Peppard said there is no room for error in the system.
For example, an Angus heifer coming in at 40-45kg needs to be doing 0.7kg/day up to weaning, and continue this at grass, so they are 200kg coming back in.
The target weight gain for the 120 days indoors is 0.5kg/day so they are 260kg going back out.
"The performance targets need to be precise and they need to be met," he said.
"Central to meeting them is weighing, which needs to be done a couple of times a year."
In response to a timely question about when is too late to spread urea, Dr Stan Lalor of GrasslandAgro replied "never," adding "the key is not the date but rather the prevailing weather."
There is an assumption that it will never work in summer but that is not necessarily true, he said.
There is a risk compared to CAN in hot dry weather but once there is rain within 48-72 hours afterwards, it can be just as good. However, he did point out that morning dew or a light mist will not suffice, it needs to be at least 7mm.
For someone who is sceptical about using urea, he suggests getting a pallet of both urea and CAN this year, use according to the conditions and compare the results afterwards.
"Urea has lot more potential for use than its currently getting. From a cost point of view, it's a no-brainer," he said.
Budget for more bad weather
Farmers need to budget on the current poor weather continuing on for another few weeks so those starting to running low on silage need to consider stretching it out by feeding some meal.
That is the advice of James Keane, Teagasc beef specialist in the west and midlands.
For suckler farmers, the priority has to be the care of the suckler cow, to keep up the milk for the calf and also to ensure she is in a good position to go back in calf.
There is a 10-15pc drop in conception rates when cows drop 0.5 in condition score from calving to mating, he said, adding that supplementation of around 2kg/head was required.
Most people got some stock, definitely lighter stock, out in the two weeks after St Patrick's Day, said Mr Keane.
But some of these had to be brought back in, as ground conditions, especially in wetter areas, are horrendous.
Grass growth rates have also been very low so, when ground does dry out, farmers without nitrogen out should spread half a bag urea to kick off grass growth followed by another half bag in early May.
Current ground conditions are also pushing out closing dates for silage. But the priority for now is to look after stock.