Absolutely get a starter. This is one investment that is definitely worth it.

Some additional thoughts:

1) I've noticed that 100% of people at my field use electric starters on any given day. Must be a good reason for that
2) After some experience, I found that you want to limit the number of cables around your plane. Will be safer and neater. So, if affordable to you, get a battery that attaches to the starter (see Hobbico's setup)
3) DEFINITELY get a remote glow ignitor

I use the Hobbico Torqmaster 90 and the Tower Hobbies Glow starter with meter (lets you know electricity is flowing and how much power you have left).

Have Fun!
Jim