Windblown,
Were it me, I'd leave the machine original. Granted there are many more types of feet available for the low shank style, but there are so many low shank machines the back clamp machines are a bit unique. The feet are available for them, you just have to be on the look out.
Of course I did it backwards, I got my set of feet from the LSMG first, then found a 66-1 redeye.
Joe