Your house temps are very similar to mine. I have a 120 gallon tank with 7 Severum and 1 Angel. I use a Hydor 300w inline heater (with an Eheim 1500 canister). I like not having to see the heater in the tank. Have had zero issues with these Hydor heaters. Also run on 2 other tanks - a 150 gal African cichlid tank and a 90 gal Discus tank. Both of those require higher temps and the Hydor heaters have no problems maintaining the desired settings. Both also run the big Eheim canisters. Good Luck!
BTW - The 200w likely would work just as well. I just like to overbuild 🙂
I live in Dallas and none of the stores mentioned so far are on the "east" side of Dallas. The shop most "east" is Aquarium Boutique, 9035 Garland Rd. I have purchased many fish there through the years and have never had one die.