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You can wait if citramonb answers you.
I was in contact with him when we discussed his case starting at
this post in forum section
Bitcoin Technical Support. I would suggest, you open an own topic there to discuss feasibility of your case later, once some details have been resolved here (see below).
An attempt to attack your recovery problem with any Kangaroo method tool will need a known public key for your Bitcoin address. If you don't have that (no spent coins from your address) then I'd say you're mostly out of luck.
If you definitely know the public key, chances aren't too bad, but it depends. If I interpret your WIF template correctly, you have a large known chunk at the start, then 3 unknown, another known chunk of 5, then 10 unknown and finally a known ending part. So at worst you have 18 unknowns somewhere in the middle or more to the end of the WIF.
Is that correct?
I'm not entirely sure how to handle unknown fragments of WIFs that are somewhere in the middle compared to having simply an unknown fragment at the end, specifically how to translate that into search regions for RCKangaroo or similar tools.
