Your pokecommunity mirrors are fine. In-fact I interoperate between the two boards regularly. But I do stick to this one primarily as the pokecommunity people seem to have given up hope entirely on D/P/P (or almost entirely)
Now as I have no experience with poketex, I can not help you out but I will hop on the IRC channel and see if I can find others to aid you. As the more info we have documented, the easier it will be for me to do my texture edits on the final release of my hack.