Formal:
* Hoffwn iawn dy gymryd allan. (This is the most literal translation, but sounds quite formal.)
Informal:
* Byddwn wrth fy modd i'ch cymryd allan. (This is more friendly and conveys a sense of excitement.)
* Hoffwn dy gymryd allan i fwyd. (This specifies a dinner date.)
* Hoffwn dy gymryd allan am ddiod. (This specifies going for drinks.)
More playful:
* Fe fyddai'n bleser i mi dy gymryd allan. (This conveys a sense of pleasure in taking the person out.)
Important note:
* When addressing someone in Welsh, you need to use the appropriate form of the verb depending on whether you are talking to a singular or plural person, and whether you are being formal or informal.
Ultimately, the best way to say "I'd love to take you out" in Welsh depends on the specific situation and your relationship with the person you are talking to.