I am 6'3" & close to 17 stone and have an R22 & R44 rating, They are both no problem to fly but they are both very small width wise, if you are like me with 48" chest then its a bit tight but doable.
I learnt on an Enstrom which might be another option for you, its cheaper than an R44 and very wide so no problems there and can easily lift the weight.
It depends mainly on what you are going to do when you get your license, I was going to buy a 44 but only do about 100 hrs per year and the costs don't add up too well so I bought an Enstrom which dosn't have the 12 year rebuild problem.
I think you can lean on Enstroms at Shorham.