Not knowing your entire set-up, maybe store your P5 for now and listen to CDs / digital downloads for now and in 2-3 years, put the P5 back into your system. The Rega P5 is a great TT and you would be loosing too much by selling it used or getting enough money for it to break even in buying something less capable.
If you won't have time to listen to the P5 why would you have time to listen to a "downgraded" TT?
If you won't have time to listen to the P5 why would you have time to listen to a "downgraded" TT?