A heal spell could be useful, but it would be very limited in its ability with Walks Through Walls. I only have a 2 magic for spellcasting so my max force I can cast at is 4 which in turn means that the most successes I can have is 4. So any serious wounds it won't do much to help with. I can look at picking it up for down the line. The other issue is that to learn a new spell is 5 karma points which means I don't have them to initiate or raise skills raise my magic or something else.
Well, the most that First Aid can heal is 6 (or 7 with aptitude,) which isn't much more. Still, combining the two we can, in a single IP, potentially heal 10 boxes of health. I understand that it's not a priority, per se, but it is a standard that you'll want eventually, so why not get all the spell formulas you'll eventually want now? At least, that's my thinking. The 500 yen a spell costs isn't going to put much of a dent in the huge pile of money you'll be saving to get that Power Focus you so desperately need.

By the way, I was thinking about a Tacnet.
Rating 2 would work fine with 4 members and would only require each person to provide 4 sensor channels.
So, audio, video, smartlink and a fourth like lowlight or spatial recognition should be enough.