Seems like a long time for such a small amount, this is why most users prefer to use PRs in other ways. Anyway, it looks like you're happy, so congratulations.
It is always pleasurable to get something like this for free. The amount doesn't matter at all. I don't consider it as savings actually. I received most of those RP from the hourly faucet claim. There is no benefits of keeping the RP after reaching 100k milestone. That's why I exchanged it into BTC.
I think your RP can already be exchanged into BTC and maybe it will take a few more years for you to collect it again.
I already exchanged the RP into BTC and played the hi-lo game with that. I will be able to reach the 100k RP milestone within a few days if I want. But I don't like to play the multiply BTC game at Freebitco as it has 5% house edge. I had wagered around 1 BTC in a different casino within a few hours in the previous week. Anyway, I was able to wager 0.04+ BTC with the exchanged RP amount.