Sounds like decent gig for you.
Pay is about on par for the aircraft, although corporate pay is also heavily dependent upon experience, keep that in mind as well. With my experience level I'd be a little hesitant to take that because I make almost twice as much right now, but I'm also on the road probably 3X as much as you are. I'm really not trying to build TPIC is hard either. But do you see what I mean? It's not just the aircraft rate is, it depends on what you can reasonably value your worth and experience.
On that point. What is the per diem? Though technically not pay that's a nice little kicker if you're out on the road more. Probably 60-70 a day or an equivalent hourly rate if you are sitting somewhere out of base. Keep in mind you are a salaried employee. I've found with my own experience with these types of gigs is that they start slow but with a fast growing company (like you stated) you'll find yourself gone more and more. Again, a good per diem will help off-set that somewhat. Obviously schedule plays into that as well, are you a Part 91 24/7 on call employee? Or part 135 with guaranteed days off? If you are the latter, then you should probably have a 150-200% or better day off rate if you get extended on the road (I guarantee this will happen at some point).
My suggestion/experience be a sqeaky clean good employee. Always on time, positive attitude, hard worker etc. and after 16-18 month you'll probably be due for a pay raise, unless you upgrade.
Based at home? Worth it's weight in gold, probably $25-30,000 in monetary value. So if you decide to leave for another higher paying gig but will be either a commuter (airlines or ACMI) or will just be always getting airlined to and from the aircraft on days off (Netjets or pure corporate). That's where I'd be at.
I hope all that helps. To sum it up, I'd take it. Let go of any SJS you have (I had that real bad back in the day myself). And enjoy some more time with your family and some new hobbies.
Good luck in your decision.