Hi dave1119,
That’s great news 
The choice of a mattress protector, mattress pad, sheets, and bedding depends on many individual factors that are based on the preferences of each individual and on a series of tradeoffs that have different levels of importance for each individual. Because of this (and because I haven’t tested most of the thousands of different bedding products that are available) … my recommendations are based more on the choice of materials and combinations than on specific brands or products.
The last part of post #4 here talks about the different “technologies” that are used to help with temperature regulation and on the importance of ventilation and the control of humidity against the skin regardless of actual sleeping temperature.
Post #10 here includes lots of information about the choice between different types of protectors, pads, and toppers and some good links which may help you “predict” which may be best for you. There is also more information and some specific links in the second half of post #15 here.
Post #7 here and post #26 here include some good information on sheets and bedding and “sleeping cool” and some links to some good information sources and outlets as well.
So for “maximum cooling” overall I would tend to go with more breathable foams in the upper layer of your mattress (quilting foam and latex both tend to be quite breathable) natural fibers and fabrics in the ticking/quilting of your mattress (wool, cotton, or viscose which isn’t really natural but is a popular “in between” choice between natural and synthetic fibers), with a wool or knit cotton mattress pad or protector (unless you need extra "softness in which case a pad may be better but this can always be added afterwards independent of a protector) along with cotton, viscose or viscose blends, or linen for your sheets.
Hope this helps.
Phoenix