Actually, it seems like you're not the type to rush people, but I'll say this anyway...
"Time" means how much time and freedom I'm given to do my job once I have an assignment, not how much time before I'm needed. Also I'm always really busy with SotW, so I can't promise any kind of promptness...
Normally, I volunteer on-call, as it were. I can sprite for you, and you can put me on your team list, but I do require a little space to work, because I work in "fits and starts" as it were. If you remember the tortise and the hare, I work kind of like the hare. A lot of work at once, and then none at all for a little while.
But if you're okay with all that, then sure.
And sorry if I make all this too complicated. It's just that I like to be careful about committing myself to things, and I like to make sure people aren't going to expect more from me than what I can give them.