I am not wallco obviously, but I think I can answer your question since I was pretty active in the forum last season. 7/5 proved to the most profitable long run. There are strings of A-bets that win and miss out on a lot of betting opportunities when only following 7/5; however, A-bets long run when buying 3 points are losing money. What we discussed last season was playing 7/5 and labbying the A-bets. You could implement a 1-5-7 which would be a little more costly. Its really up to you. If you know or are willing to do a labby, then that will be your best bet to go a long with 7/5.
I know a couple people who labby the chase110 as well to go a long with it. I was taking a break from sports betting, but if i put some money in my account I will probably run a labby in a seperate thread for those two mentioned (chase110 & JM ).
Getting the plays posted early is usually not a problem since JM usually has an excel sheet at beginning of the season. Just have to make sure wallco has his plays up or do some of my own research. Your best bet if you have the bankroll 200+ units to start the season would be to follow what wallco does. He seems to have a great track record and bankroll is always increasing from what I know.
Good Luck