Hi YV84
Basically all the players that I am currently creating are to bide my time for PES 5, they will all be redone when it comes out (some stats will be re-evaluated, but mainly for the appearances). Working the stats out is the hardest part as the appearances are easy to me, so with the work I've done so far it makes less of a job when the next game comes out.
To your questions, if you don't have many chances to post players then it may be better to wait till PES5 comes out as that's when they will be much needed. (I don't mind doing the appearances for them)
About the height/weight situation, it's a bit confusing, isn't it? I have had conflicting information about stats but only a few cms/kgs in it. I've never had that much of a difference between them though. Just a thought, ensure that both Ivanov are the same player, but i'm sure you know what you're doing. I don't really know what to suggest about that, i'll look into it myself and tell you what I found later. (You are talking about Valentin Ivanov? Just want to make sure!)
Anyway post your list up, i'm interested in who you are creating, or have created. Do this when you can though, no rush. Thanks.