I have used Waterlox on that wood and I am pretty satisfied. However, be prepared for a killer smell when you use it. That's the only thing i don't like about it. Also, I think you need to start with their "original" product first, not the satin. Their instructions specify to always use the origial (glossy) formula first, then go to satin for next coat. I would read their instructions very carefully before starting this work.
Also, if you are going to add stain (I have never done it personally), make absolutely sure you do some test samples first, and when you decide on a stain, make sure you mix that stain with waterlox consistently! You do not want one room 2 shades lighter than another becuase one gal of waterlox had a little more stain than the next. Actually, I would get all the waterlox you need for the first coat for all rooms, mix it all together with the stain, and do the first coat on all rooms from the same "source" to avoid that problem.
One other thing to consider: In my experience, I had about 10% of the IPE boards that appeard very light in color -you could always pull these out and not use them, except maybe in closets and other areas not that noticeable. That may cut down on the variability of the color for you. Also, just by applying waterlox (or I suspect other oil based sealers), it will darken the wood a bit without any stain. Have you tried that and seen if that is dark enough for you?
|