Welcome!
Taking money from a taxable account and then placing it in a Roth IRA will probably cause you to pay taxes on the gains (short or long-term). That is not efficient. Taxable accounts means "Do Not Disturb!" Place money; watch money.
I think it would be simpler to place after-tax money straight into a Roth IRA, say from a checking account; you probably can do it in dribs and drabs, so presto, a form of DCA.
Follow the suggestion of matchewed re filling accounts.
Your AA is for your total investment portfolio-401k, Roth IRA, taxable. Develop a written statement of your plan based on your risk/reward levels. Currently, you seem to be saying, 100% equities (REITS are stocks) and 0% bonds. By the way, have you ever lost a big chunk of money in the market or know someone who has? Would you be upset if 30-40% of your EF just disappeared from your checking/savings account? Bonds can also be used to buy into big drops in stocks when you AA rebalance. If you do bonds, I would suggest short term investor grade.
Once you have that, develop percents of what type of assets to be buying. Personally, I think you are making it too complicated with a smaller portfolio $ level. In your Roth 401k, I would just do the 2055; set and forget, but no need to trade the large cap you already have. Buy in monthly with the 2055. For taxable, I would just do the total stock market index; set and forget, but, similarly, no need to ditch the FTSE. On your Roth IRA, I would also do the 2055, but no need to sell stuff. My suggestion is to streamline your positions and re-balance your portfolio yearly.
You have a good start. Keep it simple until you have a bigger chunk to manage.
Good on getting others to pay your mortgage and the EF.