Hi Avitek!
My dad loves RC plane stuff.
I would say design your site more like an actual store. Make your main page like a store front and consider what it would be like as a stranger looking at it. Retail stores have displays in their windows to grab the attention of a passer by. Consider throwing in a blurb about what the site is about and why I should be going through it (in your case, great prices on RC planes and such)and maybe use some more fun colours (maybe borrowing colour schemes from some of the bright RC models themselves).
It seems like you can shrink your navigation bar down too and make better use of the space for showing off more pictures, descriptions, reviews or even testimonials.
I'd also try to stay consistant throughout the site. I noticed that clicking into an RC plane brings me to a different looking page but with your logo. (this would be a big job!)
I do like how you have reviews on all the products. It's a great idea and I think it has a lot of potential.
Sites like this are a big job, but once you have a foundation (which it seems you do with your store in working order) it's all a matter of tweaking!
Have fun with it and maybe check out other RC sites and stores to get some ideas from. Look for what you like and don't like about them and work your site around that.
Phew, I think i've said enough!
Cheers!