No worries, go for it. I did not like the idea of modifying the receiver either, although most people say it is easy to do. The way the Ironwood attaches with a long fairly heavy bolt all the way through the stock into the receiver, it is extremely solid. I would go as far as to say it is more solid than one with 2 tangs & no bolt.
You don't have to modify the receiver in any way, and could easily return the rifle to original configuration. The only drawback is you don't have a working buttplate trapdoor storage compartment. No big deal as many AK's don't have one anyway.
Here's mine, finished by board member Sinatra, his company is called Combloc customs. I bought mine through him. In these photos I am missing the buttplate, as I bought the wrong one for the Ironwood, and picked up the correct one a few days later.

The only down sides to the Ironwood SLR stock is that you apparently can't install a cleaning kit or use AK-74 type lightening grooves in the sides.

Here's a site with photos of actual Soviet AK wood. They no longer sell it, but the photos show what wood looked like at various times.
A dark red would the later AK-74 dark red. This is actually a deep red-brown. Note that many photos show the colors as more red then they are, and most people stain the wood way to red and not enough orange.

For a good Russian dark red, I used Tandy water based leather dye in "Cordovan". This is a dark red-brown that's a pretty good match.

http://tantal.kalashnikov.guns.ru/bstakwood.html

Here's my Ironwood laminated AK-74 stock.

Not sure about the Ironwood design, but RPK's use a through the stock bolt arrangement. The bolt screws directly into the back of the receiver. Its pretty solid.

[span style='font-weight: bold;']I really like lodine orange, who make that ?
I ordered a combloc customs iodine orange stock set, cant wait to get it installed. Hopefully
he will have it finished in a month.