First of all, if I make Alchemist, will they spent alot cash?
yes, you're dependant on pots, mainly whites on higher lvs, weapons cost, philo cost, armor cost, embryo costs etc feeding costs, etc
you'll spend some 15mils on your whole way from alch to bio
when on bio, same stuff, new armor because if you're going to AD int build, your equips are now useless (i suppose you went with agi build as alch). and each AD shot, even though the insane dmg it does, its around its around 1.2k each. be prepared to spend around 1mil per 500 AD shots
And what gears should I buy?
elemental weapons, i recomend fireblend (around 2mil) and light epsilon (around 1~1.5mil) 1st, then you can buy tomahawk (2.5~3mil) and ice falchion (<300k) bought cutlus but on my opinion sucks. its around 1mil
Are they expensive?
yes. price mentioned above
Does it cost much to get Homunculus?
64k per try, if you fail to make one embryo, pay again, if you dont like the homun you get, make the embryo again (+potion guide wich is around the same price). to make homuns adult you'll need a philosopher stone, they are around 3mil atm
How do I lvl my Homun?
depends, if vanil just afk on these places till you feel the xp is getting slow, when it does jump to another
payon dungeon > orc dungeon 1F > orc dungeon 2F > Toy factory 2F (till it gets around 190 flee) > gh prison (till it gets 200 flee) > nif
for the other 3 types, just stay on
payon dungeon > orc dungeon 1F > orc dungeon 2F > Toy factory 2F (> for lif - clock tower, kill tons of bathories. dunno for filir and amistr, i dont have them. already saw some on gh prison though. try your luck there)
How do i get Base xp with Homun/without?
what your homun kills give you base xp, it doesnt give you job xp, you need to attack to get job xp. i recomend you leech someone, till you max the job lv, then go to wtv you want letting the homun do the dirty work.
I heard Homun eats your Job Exp. What stats should I set?
i lved my vanil with agi/vit build since vanil does everything, i lved my lif with agi (main), dex, str, vit build. hybrid build
What are *MUST* gears I should have? And how much they cost?
Luk and dex equips for alchemize, agi/flee equips if you're going to agi build. the price depends
if you want to trans for bio, get some int equips later, for acid demo (bio skill, dont bother buying them when you're alchemist)