Sorry mate, being a higher comp motor you will want something with some leeway.
While the L2 10cm will be fine, you may not hit the mark in terms of 300kw. Lately I have found 98ron has been letting me down on DE+T builds (ive done a few).
Be it myself wanting 300kw from a 25+T I would definitely look at a hypergear G3. It will make the said power goal and wont give you headroom issues in terms of restrictive housings or small compressors. Sometimes I find a higher comp motor to be more sensitive to wheel combos, but am pretty confident in the G3.
Plus the G3 is bolt up to stock manifold and off the shelf dump, no bloody external gates or anything of that sort