--snip--
10989651.89 * $0.332 = $3,648,564.4 (about 87 BTC when i write this post)
due to wallet content this assessment is quite feasible, not factoring in amount of time I must spent to address development related issues...
It's not wise to disclose that you have lots of BTC, be
very careful with incoming PM (Personal Message), especially those which ask your wallet file or access to your computer.
Issue had now been shifted to parallel almost hundreds, or almost near a thousands of those GPUs so recovery reasonable amount of time. This require significant retooling of existing tools available and have it parallelized without incurring excessive space complexity penalties. I guess will be spending quite a bit of time diving into those topics.
One naive way to do it is renting multiple machine where each machine have different keyspace range.