I still say you can club. The front is high but could be lowered for a better look.
not really as the fork tubes will hit the bar before you clear an inch.
I'm a big believer is to each his own and if the guy still wants to cafe a Custom it's his bike. However it really is a lot of work to modify a motorcycle, even one where there is an aftermarket for it like a SOHC cb750. However there is very little aftermarket for a DOHC cb750 custom, espically cafe parts and most of the body/cafe parts will have to be fabricated. For a newbie that is a daunting task. Concerning cb750C's I get the question about 10 times a week from guys who bought a cheap bike and now want to do something different with it. Some do great things, some give up.
I'm sure if he sticks with it it will probably come out to be a nice bike, but when it comes to the question of the easier path, the easier path is always unload the cb750C and get a SOHC 750.
And yes I can be a little blunt at times, but meet me in person and I am super helpful.