401K or Home Equity loan?

[STG]

I want to buy a lot to eventually build on in 5 to 7 years.
I can borrow up to 50,000 on my 401K and pay it back over 10yrs @ 5.5%. Or a Home equity loan for 50,000 same rate and same time frame.
Which is the best way to go? I feel I will be able to pay them off sooner than 10 yrs because I will be retiring in 10 Yrs.