Thanks, Jim (Fox)! RE converting a camera: There's no simple solution to your dilemma, in my experience, unless you have deep enough pockets to buy another fairly recent body (possibly used) to convert. However, I can tell you this: if you can forgo doing night photography, then you can get very impressive IR results from a very humble (by current standards) camera body that has been converted. My first IR conversion was my ancient and much-used Nikon D200, which was introduced in 2005 and has a very obsolete 10 MP DX CCD sensor. I got it converted about 6 years ago; it's what got me started with IR. I don't use it much any more, but I got plenty of fine images from it and would gladly keep shooting with it if I didn't have anything else.
But I do now (have something else): a converted Nikon D3200. It was Nikon's first DX camera with the highly regarded 24MP sensor that has been in many of their models since (with, no doubt, some incremental improvements as the models evolved). It was their most humble, entry level DSLR when it was introduced. I bought it as a back up body, but ended up using it quite a bit more than I expected because it gave me excellent images. I had it converted to IR about 3 years ago, and it has served me remarkably well since then. It won't work well for night or very low light photography, but is really good for pretty much everything else IR.
My suggestion (for you or anyone else considering a conversion): see if you can find a good, used, recent-model body for your conversion from the same brand that you already shoot. BUT BEFORE YOU BUY IT: check the camera-specific notes on the lifepixel.com sales page to make sure there are no potential gotcha's with the body you're considering (
https://www.lifepixel.com/product-category/our-services/infrared-camera-conversions). Some of the lenses you already own might work well for IR (not all do), which could save you some money...
My D3200 is one of those bodies with a gotcha. It has an internal IR light source that's part of a shutter monitoring mechanism. The IR-blocking filter that comes installed on its sensor keeps the IR source from fogging photos. But when you replace that filter with one that passes IR, then that IR source becomes a problem if you're shooting long exposures at high ISO values. So that camera is not suited for night photography. But I absolutely love it nonetheless.
