Realtor and Investor, any ethical issues

[Manmohan Singh]

Are there any issues in buying properties using MLS for your personal investment portfolio when you have a realtor license in Texas? My wife is planning to switch career and become realtor and we both plan to buy 3-4 rental properties in 2019. Wanted to know if there are any ethical issues or disclosure requirements we should be aware of. I would assume we can't buy the property if my wife is representing the client but other than that, I don't think would be any issues. Please advise.