Nimzo,
Just a couple of quick points. I don't think many people object to the YHWH (Jehovah, Yahweh) being used in the NT when the OT is being quoted and it appeared there. I think the problem becomes when Jehovah is added in the place of Lord in spots where the OT is not being quoted. I have yet to find one shred of scholarly evidence to support that the original texts included YHWH. I'd love to see it if you have it. I'm a life long JW and recently "stepped aside" as an elder because I couldn't get answers to some serious doctrinal questions and therefore could not in good conscious continue to teach these doctrines from the platform.
In regard to baptism, you are not in line with the official JW teaching because if you read the book of Acts, you'll see several examples where people heard the good news and were immediately baptized. Right after Pentecost thousands immediately responded, after one of Paul's speeches, again thousands. Auld Soul already mentioned Cornelious and his family. How about the jailer and his family when the angels broke Peter & John out of jail? There are other examples that I'm sure you are familiar with.
You may say things are different now and maybe they are. But, if you believe in the Bible, then you really can't deny that at least in some cases it would appear that knowledge of Jesus and his part of the universal plan and faith in that sacrifice is sufficient for baptism.
I don't have any answers for you if you are searching. But, I would encourage you to continue to search for truth. I have come to the painful conclusion that the organization I thought was God's chosen channel of communication isn't.