What reagents would you be carrying? I carry Necro Reagents on my Sampire especially Pig Iron. There's no way around it.
I'm about to redo a new sampire suit now that they have these Forged Metal of Artifacts which guarantee the enhancement process. I've been walking around on a grade B suit for over a year now because I'm too lazy to craft. But even with a Grade B suit I can get alot accomplished.
The entire suit building process really boils down to what I can and cannot fit onto the bracelet and ring. Unfortunately I think I may be forced to put 8 Strength on either the ring or bracelet to hit 150 HP (HPI Caps at 25 I believe). I do not like having to do that!

Stamina Increase, Mana Increase and LMC are what I'd be looking at putting on the suit pieces legs,arms, gloves. Keep in mind Stamina works in intervals of 30...so 90,120,150,180 is where your going to be receiving benefits to SSI from your stamina. Having 179 Stamina is the same has having 150. Get familiar with the SSI tables... Cerveza has posted them half a dozen times now I think.

Many players over at Stratics advocate 180 stamina on their suits which I also believe is madness because trying to maintain that against any of the toughest 160's is pretty much impossible.
You really need to look at the SSI tables and think about what your main weapons of choice are going to be when deciding on what stamina range you want to be in. I personally shoot for 150 but need to relook at it again, I don't forsee any changes but I'm going to double check on the double axe. I'm pretty sure thinking off the top of my head that at 120 Stamina and 10 SSI I'm at max Swing Speed with my weapons. Not that I'd go with 120...I'd go with 150 for a buffer but certainly not 180.
Also HCI,HCI, HCI.....to me it's nonesense given the usefullness of Lightning Strike. Don't get me wrong your gonna want HCI without a question but trying to squeeze in 45 isn't a wise choice to me. 30-40 is fine especially with HLD and the use Lightning Strike when you need to against the tough 160's. It's even more mindblowing to me that people want HCI on their woodland pieces instead of DI. I just don't get it but I regularly find myself in the minority.
I also stricly PvM. No PvP whatsoever since 1999 when nerfed the removed precasting tank mages.
Here is my school of thought and what I go with. Woodland Armor pieces with DI, MI, HPI, and Stamina Increase. Right now I have HPI on pieces that I'm not receiving the benefit from because I'm already at the cap. I wasn't aware it capped at 25. So I'd keep a close eye on that when if your going to put HPI on. I should be well over 150 HP but I'm at 143. On the other hand I do receive str benefit from drinking a Str Potion. Still with Curse which gets cast on alot I think your best bet is to hit 150.
Sidetracked...My school of thought and what I advocate is 100 DI on the suit with the properties listed above and going with 450 Non-Exceptional Weapons that you can imbue 5 Mods of your choice on.
Yeah....I'm the lone Ranger but there isn't anything so far that I've spent any considerable amount of time adapting too that I can't Solo. Bedlam and Twisted Weald are my proudest accomplishments. Slasher I haven't really spent much time as his drops don't interest me. Slasher would be alot of jousting and retreating to heal up against his onslaught of specials but even after my first experience with him...dieing 16 times I'm confident I can do it. Towards the end after I got used to his attacks I only died once or twice. This is the first time out mind you...
Both Slasher and Osiredon I would need a Discorder without question so it wouldn't be a solo in the truest sense. Apparently a thrower can do it which I plan on making someday.
Anyways...there's my 15 cents!
