A few caveats on the style of bike you have shown above:
Seat- yep, no support, diminishes your ability to control the handling of the bike, uncomfortable, and purely personal taste.
Electrics- where will you put them? With an open triangle, a flat seat, and no "hump", where do you expect to locate the battery, reg/rec, solenoid, fuses, and SSM? You need all these items and you're removing all the recipes real estate to hide/place them.
Handling- all too frequently you will see bikes pictured online where the seat hoop is slammed down onto the rear tire, large sidewall tires, and then clip-one. It would be like steering a dump truck on an auto-cross track... You require some distance in the rear for suspension travel before the shock bottoms out on the tire (especially with a passenger). Ditch the "looks quotient" of tires, and use quality modern tires for your bike (Avons, Bridgestones, Metlzers to name a few).
If you have any access to, ride a bike styled as you desire. Then decide if that "style" suits your body. Member Trad has a few build in the Project section. His Bare Bones bike is pretty well executed and is form follows function oriented. He's an experienced rider with some other bikes to guide his choices, so his design choices were executed against his knowledge and experience.
You can "build" a bike of different style without "cutting it up". If you restyle it, ride it, then decide to alter it, easier to do if you haven't hacked off the important bits. Get it sorted out, ride it, then the following year, attack it to execute and finish the "aesthetic" choices that are your ultimate goal.
The form of that bike doesn't follow function. That's a bit more than a personal taste opinion, it's a motorcycling assessment.
