If you want to play popular music as well as some classical and/or church music, I might suggest looking at the Roland Atelier AT-90, AT-90R, AT-90S, AT-90SL, or AT-900. (The AT-900 is the current production model.) These have Hammond-like flute tones, theatre tones, and classical organ sounds. In addition, you will get realistic orchestral voices like trumpet, oboe, violin, strings, etc. However, these only have a flat 25-note pedalboard and are not to AGO (American Guild of Organist) specifications. If you do not need the the "full" pedalboard of a console organ, you might also consider the AT-60 or AT-80 series of Roland Ateliers. If you buy used, you may be able to stay under or at your maximum of $5,000. However, even then it may be hard. There are three Ateliers list here on ebay--two of them have starting bids under your $5000 price.
Please note that am NOT affiliated in anyway with the Roland Corporation. I am just a satisfied customer.</p>
I hope this helps,</p>