Getting his inside skills to high levels will be a tad tricky. But at least those started at very nice levels.
Personally, I'd probably make him a inside oriented guard, with good IS and ID. But if you want to push RB later, you might be able to get it to 10 or so.
1v1 forwards and guards give the same increases in HA and DR. The main difference is that 1v1 guard trains JS, whereas 1v1f trains a lower amount of JS, and adds IS. Interestingly, the shorter the guy, the more IS will increase in 1v1f. So, a 188 cm guy is perfect to train with 1v1f.
Check out the crowd sourced training project for estimates on how much each training week increases a skill
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