So let me offers some opinions and reasons for them:
Whatever anchor you use it needs to be BIG. A Krogen 48 is a heavy boat with a lot of windage. So go up at least one size from the manufacturer's recommended size for your boat.
You can get by with 50' of chain and the rest nylon but I prefer all chain rode. No chafe breakage possibility, no keel wrap (really applicable to sailboats), the windlass pulls the whole rode up easily and the chain weight helps with holding.
You will need at least 3/8 HT chain for your boat. The maximum working load for that chain is about 5,500 lbs which is consistent with the holding power of a big anchor.
For total length of rode on board, take your maximum anchoring depth, add 5' or so for bow roller height and multiply by 6. You can get by with less than 6, down to 4 or so in tight anchorages with light wind. But go up to 7 for maximum holding power.
And of course you will need a beefy windlass to pull up a big anchor and its chain rode.
The newer designed anchors: Rocna, Manson Supreme, etc set very well, dig in deep (at least in mud or sand) and hold very well. They set much better than the equivalent sized CQR or Delta which are older designs.
I used a 55# Rocna when I cruised on a 35', 18,000 lbs sailing cat and anchored at least a 100 times one year. The Rocna always set first time, would reset when the wind or current shifted and when I finally pulled it up, it came up with a LOT of stiff soil, meaning it dug in deeply.
David