I've read quite a few posts about how to cleverly negotiate salary and compensation package after securing an offer. However, as an entry-level job seeker (master degree plus 1.5-year experience), how much bargaining power do I really have? FYI, the employer I'd like to negotiate with is way more well known and competitive compared to my previous employers and the position is also sponsored, so I definitely don't want to risk losing the opportunity and understand they have much more bargaining chips.
That said, I shouldn't behave like taking whatever is offered on the table, right? My plan is to ask them how the job is budgeted (tactic 1) and if there's any room for a 5% salary raise, let's say, for whatever they offer (tactic 2). And if they told me the salary is non-negotiable (possibly fixed for entry-level positions as I heard), I can ask for signing bonus immediately (tactic 3). But how much and what should I bargain for in my situation? And is it okay to touch on signing bonus, not to mention many other perks such as medical plan, vacation, relocation package, etc.?