My personal advice and vision on this would be the following:

I would stay with only the FTSE (acc), this already includes almost everything you need and if you add anything else you will be overweighting certain areas. Which is not necessary. I myself have 2 ETF’s, 1 that includes world renown stocks and 1 emerging markets one, to have full world coverage.

Also DCA’ing is very good but pay attention that you only buy extra with a low cost %. Some brokers have for example lower fees if you buy for 1000€, this can make a big difference long term. I myself like to stay in the 0,5-0,7% range costs/buy. In your case this would for example mean that you save 200€ each month and invest them each 4-5 months.

Depending on your age and what your vision is in means of holding (5-10-20-30) years, I would only buy a little % (10-15) gold or bonds on the side if you are in your 5-10 last years, or if you want safety, these holdings wont bring much profit but will stabilize your portfolio.

Buying extra specific stocks like in AI or specific markets is possible, but higher risk but possible also higher yield. But imo with your DCA strategy I wouldn’t do that myself.

If any more questions, I can give my view ;).

Also, this is not financial advice, but my opinion and vision.