how should i build them then, and I will still need a lot of affection, so unless you have some authentic advice about that to i still would like the command codes
First things first, pick calmness inducement (even if you're going the dark route)
The way I did it was this, after completing the tutorial the game offers you a free upgrade of flirt/jokes/intellect. Pick flirt. Then go to the upgrade screen, and take one level of intellect (intellect and flirt should both be at level 2). Then spend the remaining 1500 exp on 'speech checks bonus xp', which should be at level 4 now. Converse with Nikki. Choose flirt, then intellect, choose anything, kiss her on the cheek, choose intellect. Take another level of speech bonus xp (now at 5). Flirt. Flirt. Go to the store and do not beg Nikki for money. Choose whatever. Take a level of Jokes (now at level 2). You should now have 300xp and be at the store.
Choose whatever you like until you get to the register. Jokes, jokes or intellect, then whatever you want until your back at home with 1000 more sweet crunchy xp points. Peek on Nikki in the shower(obviously). Step in her way. Apologize. Flirt lvl 2. Whip it out. Joke lvl 2.
Check out Ruby's tits. Flirt lvl 2. Joke lvl 1. Whatever you want. Tell Nikki your dad was a good man. Tell her he's watching over her.
You should be back home the next day now with 2000 xp and plenty of affection (assuming you didn't pick completely retarded options in conversations). Raise Flirt to level 3.
At the doctor's office. Whatever you want. Flirt lvl 2, flirt lvl 2, flirt lvl 3. Whatever you want. Kiss her. Whatever you want.
Now its time to gather superpowers like its your fucking job. Pick up accelerated perception to start and four levels of 'Superpower bonus xp' (Should be at level 4). Perv on Taylor as much as you can and then get rewarded with xp for not letter her catch you. Flirt lvl 3, whatever you want. Raise Superpower bonus xp to 5 and next scene is a diner.
Kiss Ruby. Choose whatever. Flirt lvl 3. Choose whatever.
Do the persuation mini game (its easy).
Next scene, intellect lvl 2, help them. Pick up the persuation bonus exp a level. Do it legit. Persuation mini game. Flirt lvl 1, flirt lvl 2. Raise persuation bonus xp another level (2) then complete the stupid minigame. Show her your horsecock. DO NOT LET HER PUT IT IN HER MOUTH. Pick up phone. Choose whatever for a while and then kiss April at the end.
Flirt with Ruby. Negociate down to $70 bucks. Help. Use calmness inducement. Take every option with Victoria and always flirt with her. Get her to buy your party supplies.
You should now be back home with 2000 more XP. Raise jokes and intellect to 3. Intellect Nikki. Then flirt. Intellect again. Tickle. Squeeze her melons like your checking to see if they're ripe. Intellect. Get her naked and peek. Flirt. Joke. Joke lvl 3. Whatever you want. Joke or flirt.
Let Ruby give you a handjob. Then intellect. Pick up Superstrength.
Whatver you want. Fight the jocks after they touch Nikki and use your superstrength. Choose whatever.
Kiss Ana. Go inside. Choose whatever path you want with her.
If you're going good guy route, consider picking up enhanced hearing now for more exp points in the next scene. If you're gonna break bad, no worries.
Fight the robots (if you're bad).
Choose the classier option with Nikki (always good general advice for her), then flirt hard. Choose whatever.
At this point, you should have around 4k xp and be making more pretty much constantly. Keep slowly raising your persuation/flirt/intellect skills and the xp bonus skills and you'll have more xp than you need no matter what path you run.
A good general tip is that no matter which route you are running, the conversation skill checks are the best way to raise affection and xp.
Hope that helped.