it comes to me that if u have a pro already ,there is no need to have another portable device--RT.
reasons re as follow:
1,There re too many things that pro can't replaced by rt
2,it seems that rt run many things very fast but there are lots of shortcomings such as the ie will often break down
3,when it comes to office.if u are a deep user of it. u will find it works slow and lake some functions ,add in marco,for example.
4,its display isn't so good as pro meaning that u won't get a better experence than pro
5,rt do not have a time writer,means that when u taking notes or painting something .its performance isn't like the pro
in brief.had u have pro and short of money,surface rt would be a good choice.but according to ur situation.i consider u'd better .......
sorry,that's only my own opinion about it and this is my first time post a reply in english cus i'm a chinese guy.So if there is anything that offens u. pls forgive me.
All in all . it depends on urself.

rly: (@-@)...