lighting will depend on the types of corals you are planning to keep. 150's may not be enough light for light demanding SPS's and some clams. Brands for MH I would recommend PFO, sun light supply, Ice cap all are very good companies. You could also go with T5's since a 75 is not that deep.
If the tank is going to be a standard 75 RR the prefilter box will most likely only handle around 600 GPH, so make your pump close to that. Since you are using your 29 as a sump are you planning on internal return pump or external? For internal, I recommend ehiem. Stay away from Mag drives they add a lot of heat. For external their are a lot of excellent pumps but I would not do the T4 they also add a lot of heat.
For skimmers Euroreef, ASM, My Reef creations, etc. You will also need more flow in the tank itself you can do a closed loop or internal pumps. I would stay away from Serio's for internal. I have them and every time I shut them down to do water changes I need to take them apart to make them restart. This still happens after Taam sent me new parts that was suppose to fix the problem. Some people don't have this problem but a lot do. Tunze or VorTech are good for internal use. I am thinking about going with the VorTech because the motor is not in the water only the impeller is in the water.
Also, I don't like anything Coral life it just looks very cheaply made to me, but that is just me.
Just my opinion their are many other good companies out there. So I will let others comment on their equipment.
Also forgot to say that there is a reef club in your area and they have a forum here on RC. The name is:
"West Tennessee Reef Club"
Joe