Do NOT attempt to fly glow planes in a baseball field. If you don't have ten or more acres out in the sticks, with no houses around, stick to small electrics.
I'd suggest a GWS Piper Cub or a GWS Tiger Moth. Both decent park flyers at a reasonable price.
If you want to get into glow planes, find a local club and go check things out before you buy anything.
The AMA site has a club locater. Plug in your Zip Code.
http://www.modelaircraft.org/templat...677786D06500E8
Good luck, have fun, but fly safe.
Dennis-