35lbs is enough lift for any of your single tank diving. Worst case scenario is a complete drysuit flood (which doesn't actually happen, there will be air trapped somewhere) at depth near the start of your dive. Filling the wing will make you slightly positive with 14kg and the 2-3 kilos of gas in the tank. The BCD itself is around 1kg positive if you are wondering about the math.i think i can do without the crotch strap. Stiletto has half the lift capacity of 911. Honestly i am not sure whether this is a significant deficiency in my case or not
The only single tank divers who need more lift are those who are purposefully overweighted for some reason or possibly those diving with layers of neoprene that add up to more than 10mm.