Help with DCS or DCC

you might want to choose another system as MTH just announced they are closing their doors next spring. they say some of their former employees may take over the DCS control side but it seems risky to me to invest in a system that may not have support.  

Before making any investment, suggest serious research into the many available wireless direct to loco systems which include Lionel LC and BlueRailTrains.

1) Then buy a TIU and choose the remote or the app for control ( bought together with the TIU).

2) Yes using the variable channels on the TIU

3) choice of the amount of power is yours depending on how much you wish to run at the same time.

4) sure

5) Yes if it has enough power for the trains you choose

6) The full DCS system is one price and the only other thing usually used is AIU for accessory control if desired. The DCS system has a lot built inside.

7) Yes you can. Older transformers need (should have) modern circuit protection added in the power line.

Thanks for all the help!!!!