Thanks for that clarification, wetsuit! Looks like I'm a part of the ELITE club with my +1615 bonus. I'm gonna pop a Free BTC boost right away! Until now I've been hesitant to touch my RP :-)
Just an FYI as I made this mistake, the Free BTC boost only affects the base payout (+/-80 sats). The bonus that wetsuit has just added is only added on top of the boost, it is not multiplied by the Free BTC boost.