Yoker,
This is what you can do with the birds you have or can get.
The rhode island red is a columbian restricted gold bird. They have wheaten and mahogany in them. They must have Db or a restrictor similar to Db. Yellow skin and single comb. I just made a test cross and it will help me determine if Rhode Island carry Db. I think they do because they have clear neck hackles.
If you use a gold laced wyandotte- they are brown at the E locus and carry melanotic, pattern gene and the columbian gene. The melanotic and pattern gene are linked ( about 10 map units between the two) so they should segregate together about 90 % of the time. Yellow skin and rose combed. I picked the gold laced wyandotte because they are columbian restricted and you can get them.
Cross a RIR with a gold GLW. All the chicks will be the same so do not hatch very many. Enough to get a male and a 3 or so females. Skin color are the same-and both are sex linked Id.
The F1 chicks will be eb/ewh, Co/Co, R/r+, Ml-Pg/ml+-pg+,Mh/mh+, (maybe Db/db+). If you get single combed chicks the wyandotte is heterozygous (split) for rose comb.
Cross a male F1 with the female F1s. Produce as many chicks as you can 30 or more. From this hatch you should get what you want.
The wheaten and columbian restricted birds will have less black in the hackles. The brown and columbian restricted birds will have more black in the hackles. Only use birds for breeding that have hackle feathers where the black pigment runs down the central shaft of the neck and saddle hackles. The outer edge of the hackle feathers will be red/buff. Do not use birds that have solid black neck hackles that is caused by melanotic. You want to breed out the melanotic. The darker red birds will carry mahogany so do not use them. Use the birds that are buff. Pick birds that have the least amount of black in the back and breast feathers or the best columbian restriction.
Pick birds that have the best body type and breed them together until you get the body type you want.
You could use a light sussex and a GLW but that would introduce white skin and the silver gene. The RIR have yellow skin and are the gold gene.
Tim