1) I do not say the MVP has to line up. I say the TC arrow has to be green on a long entry. That has to line up if its not lined up on trending entries then no entry unless trend flip, trend confirm/chop filter bar color, trend bands off green izone etc.. happen at the same time. The point to enter is 3 ticks above the bar with the TC green arrow. Some people do enter later when MVP flips this is not a requirement and is more advanced and is not suggested until you got the system down as it does take on a riskier trader but may allow you to get entries you would miss otherwise. The primary purpose of MVP is for trailing with the predictors once it flips.
2) Your stop is based on the chart. The size of your position is based upon how much your willing to risk total per trade/risk on single contract.
3) By stop I assume you mean trailing stop. I put it 3 ticks below the swing low (then i may fip to trend flip, and then to the mvp predictor 3 ticks off of the plot (ie if long 3 ticks below it). YOU can do this manually or use the stop trigger and simply adjust it as each bar closes so you dontt have to watch the chart every single second. Dont worry about bid/ask just trade based on the price on the chart.
3.1. It may or may not be higher risk. The relationship you need to understand is higher premium and proximity means a slower moving contract. So the market may move 10 points but your spread moves a mere 6 because you had high premium and proximity. Time does not equal risk as IV can change regardless of time. And Time could also be in your favor. Start with low premium low proximity trades before attempted higher positive premium trades.
Hope that helps.