How well will the pullstart hold up on a .30? Mine on my .28 barely lasted through break-in. (On a 7 PBS that I got rid of.)
Just a thought... You might want to replace that p/s with a rotostart back plate that uses a 1:1 ratio (no pinion to gear it down) and use a cordless drill.
My new Mayhem has a .26 with the setup mentioned above, I use one of my older Ryobi 18v drills and it works GREAT. One (old) battery lasted through the entire break-in and is still not needing a charge.
FYI... My drill turns around 1600 rpm which is plenty fine for starting a nitro motor (1:1 ratio), but my .28 had a geared-down rotostart, around 2:1, and the drill was too slow to start it very well.
It was one of those Ofna 6mm types that came up through the same area as the p/s did.