I'm not making it sound like anything, I'm just mentioning advantages of hydraulic clutch operation because some people feel no love for it.
Personally I also prefer a well maintained and adjusted cable over hydraulic.
Welcome on OSS. Post some pics of your 750L. Or better start a build thread.
If the 1100 engine is in good condition, just use it as it is. A 6th gear will not make much difference on a streetbike.