Whether a consultancy or not is entirely your decision. Anyway, where do you live, I mean city, country (so people might be able to suggest options)? Have you taken a date for IELTS test/ or what date is available to you/ or is your IELTS done? Do you have your transcripts from educational institutions? If yes, have you applied for/ received your ECA evaluation?
Not to scare you at all, but it is June 11th today, where do you stand in terms of the application readiness (may be from previous year, who knows)? Document checklist is on CIC website under Immigration > Immigrate > Apply to Immigrate> and under FSW program if you select Apply - FSW and within that click on 1. Get the application package and then select the hyperlink "application package" where the first document is the document checklist.