2nd sewing machine opinions

[palvim]

Hello,

I wish to be able to sew leather wallets, leather and canvas bags, and leather belts. In the future, I'll also want to do binding to the bags and make leather gloves. I currently own a Cowboy CB3200 which I want to set up for thread 138 which I guess should be possible without "dumbing" down the machine. This should take care of my belt needs. 

I'm torn between a flatbed or a lightweight cylinder arm machine that'll do threads 69-138 comfortably. I've narrowed it down to the following machines. All clones. 

1. Pfaff 335 clone (https://www.olimasz.pl/en_GB/p/Cylindrical-binder-lockstitch-machine-OLISEW-OL-335A-with-compound-transport/649)

It'll do light weight leather, canvas and comes with binder. I was told converting from binder to normal compound feed is easier on this machine. I'll buy the parts to convert to normal machine without binder. This is the cheapest option which I like.

Question 1: will it be possible to sew wallets with 3 layers of 4 Oz leather with the machine set for binding? Or it will be needed to be set up as a normal machine without binder? 

Question 2: will it be possible to sew canvas bags with machine set for binding? Or will it be needed to be set up as a normal machine without binder? 

2. Juki 1541s (https://www.olimasz.pl/en_GB/p/Lockstitch-machine-OLISEW-OL-1541-with-compound-transport/648) 

More comfortable to sew wallets and canvas bags (Flatbed). Can do threads 69 to 138. I've seen cheaper binders for this machine too. 

3. Juki 1508 (https://www.olimasz.pl/en_GB/p/Lockstitch-machine-OLISEW-OL-1510N-with-single-needle-and-compound-transport/632)

I see most professional small leather businesses that I follow use this flat bed machine. May be a better machine than the 1541 and not a huge price difference to the 1541 clone. 

4. Juki 1342 (https://www.olimasz.pl/en_GB/p/Cylindrical-lockstitch-machine-OLISEW-OL-1342-with-compound-transport/676? 

Question: Is this machine a cylinder arm equivalent of the Juki 1508 flat bed in terms of sewing capabilities and engineering? A bit more expensive but I can manage. Is it a best option to get this and make a flat bed attachment for it? This could be a do it all machine and I could sell my cowboy cb3200. Only thing it'll not be able to do binding. But I can live without it and make design changes to my products. 

Am I thinking right? Is it best to go with Pfaff 335, get a flat bed attachment and then I get all I need in combination with my CB3200. Or go with a dedicated flatbed. Or get the 1342, build a flatbed and sell the CB3200. 

Thanks in advance for your opinions.