Hello Mike,
I asked the same questions regarding the Reichstag Tiger 323 a couple of weeks ago…maybe a bit longer. I didn’t get much back in way of responses as to which kit would be best. After reading over the TigerInfo site I settled on the Rye Field Model Tiger I Witmann full interior (RFM5025). This seems to be the best starting point for 323.
I’ll be following your thread here … Good Luck
Eric