I also asked with what fuel, this is very important when selecting a glow plug. Not sure the OP knew to ask.
The slide valve carb shown is a great design as it does NOT result in a plenum around the spray bar as the throttle in closes. I seem to recall it also has an accelerator pump function (I may be in error about that).
http://www.rcuniverse.com/forum/fb.asp?m=10057899
Edited
To add the word NOT