BUBBLE.IS - Appli web sur mesure avec bubble.is

DESCRIPTION DU PROJET PLUS BAS

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Ce projet s'adresse à des personnes qui ont déjà développé sur Bubble. Si c'est le cas pour vous, merci d'indiquer quel est data type créé par défaut à la création d'une nouvelle app sur bubble.

Si vous ne connaissez pas Bubble.is, ça reste possible d'apprendre Bubble, je l'ai moi même fait en 2 soirs et je ne suis pas codeur. Merci de l'indiquer au début de votre proposition tout en sachant que vous devrez apprendre bubble.
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DESCRIPTION DU PROJET
Hello dear bubblers.

We want to build our own app with bubble.is to manage our day to day activities.

FEATURE DESCRIPTION
As a daycare business with several locations, we need to :

manage our locations
manage the employees who work in each location
manage the children and parents that come in each location
manage contracts relative to each children
manage invoices relative to those contracts
manage payments relative to those invoices
We will provide you with detailled instructions so you can move forward really fast and don’t waist time on questions.

To have u estimate will, we have :

9 data types to create and allow to manage them: create/edit/delete
6 fields in average for each data type, this is 50-60 fields total
10 links to do between tables
5 functions in average to write: generate and send invoice, calculate net amount due after a payment, etc.
Pls let me know 3 things:

when can u start, the sooner, the better
after how many days do y expect to finish
how much do u ask for this job ?
PS: We are willing tu purchase any plugin or theme that may allow to move forward faster on things like design, etc. (we already purchase admin dashboad 2 btw. )

Looking forward.