Self directed IRA or move 401k to my current employer

[Rhyna Orillaneda]

hi all. I'm from San Jose, CA. Have a question. I have 3 401ks from my previous jobs. I currently have a new employer and I am contributing to the their 401k. I'm planning to buy another real estate investment next year and looking into borrowing my 401k. My question is should I convert the previous 3 401ks to self directed IRA or just transfer them to my new employer and eventually just borrow 401k from them?

Thanks for all your inputs.

Rhyna