First off, Sim schools recruit everyone as if they are 250 miles away, so you're actually at a distance disadvantage here. .
The home/away preference is extremely minimal and everything else would have to be practically identical before it would really have a significant bearing on matters. I don't know what the exact value of that preference is, but I would guess most would say it is worth less than an SV. It's honestly one of those things I completely ignore, just like height and weight. Also, I don't think his close/far from home preference would apply here because, at 400 miles, you're not within the definition of "close" either -- you're closER, but to the game you aren't within the definition of "close" and I don't think there's any credit given for "closer."
The biggest thing here is that the recruit is "very solid" with the Sim. It is going to take a significant amount of effort to sway this kid your direction. If you have enough, you can get the player, but it will not be cheap (I want to say it took 8 HV's, 3 SV's and a 10 minute promise the last time I went after a solid, but that was with a distance advantage to me). Assess your options and proceed accordingly.
One final thing -- if you're going to go for it, you'd be better served using campus visits. At 400 miles, you get more bang for the buck with the CV than you will the HV.