Help with custom loop for a Dan A4 H2o

Hey everyone! I have a 7700x and 7900xtx I am debating doing a custom loop in my Dan A4 H2o. Seen some pretty incredible builds on here and was wondering if I could get some help with parts planning and cost options? Haven't done a custom loop before, but built around 20 pcs. Thinking I'd start cooling the cpu initially then doing the gpu when the block is more readily available. Thanks for the help!