Problem #1: You don't have 3,4,5-trimethoxybenzaldehyde right now.
Like chilly_willy said, do some internet searching for OTI (over the internet) 3,4,5-trimethoxybenzaldehyde. This is the first step which will save you much trouble later on, as the battle to synth M will be 1/2 way won as soon as your package arrives. Make sure you find a shady source.
Problem #2: You can't get nitromethane.
In the latter case you have pretty much already answered this dilemma in your very first post of this thread. Namely, 3,4,5-trimethoxybenzaldehyde plus sodium borohydride followed by thionyl chloride followd by sodium cyanide followed by lithium aluminum hydride.
It can be done this way, but if I were you I would research the ingredients of commercially available race car fuel before giving up on the MeNO2 route.
Happy Mescaline Chasing