Bilstein 5100s vs Wescott Collar lift up front?

[ThatSickRIp]

Was wanting to do the WD preload collar up front just to level my 4R out, but then was thinking about just swapping the stock shocks with 5100s. I cant see labor being any more since they have to pull the whole unit out and apart for either option.
Any issues that I might be unaware of with just swapping the front shocks and leaving OEM rear? Im only got about 800 miles on it so far.

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