RE: Thrust to weight
The short answer is that someone might have very general rule of thumb they could give you if they knew the plane (specifically the wing) type, but the long answer is no...not really.
All the thrust does for you is pull the wing through the air (which is what actually makes the plane fly). Different wings need different speeds in order to make enough lift to get the plane airborne. The wing ends up being the single most important factor in determining lift, so thrust alone is not nearly enough information. Any wing has a "coefficient of lift" which can get you to a number of how much the wing will lift at a certain speed, but that is not an easy thing to do. Other things such as drag, layout, etc also come in to play. Thrust to weight is not really a driving number in aircraft design, unless it is well over 1, and the plane can basically hover.
As an example, some competition planes I've designed are at the 55lbs cap at takeoff, and only have a .61 engine (roughly 10 lbs thrust). They fly, but not well. The wings are solely designed to handle that much weight without much power.