HDB 4 room resale full renovation, looking for responsible and affordable contractor

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Hi Masters! this is my first post on reno talk, and i would like to seek some advice from experience folks here. 

I just purchased a 4-room DBSS unit (resale, 94sqm), and i'm planning to do a full overhaul of the entire house. I have a 30-40k renovation budget to turn my hdb into a nordic scandinavian vibe home. I would like to make the following changes

• Full hacking a demolition - living room + kitchen + 3 bedrooms + 2 toilets. I think i need to take down nearly everything - tiles, carpentry work, false ceiling, etc.
• Full painting in every room
• Minor electrical work touch up; addeding a few power points. 
• Living room - New floor tiles (Vinyl or homogeneous tile), shoe cabinet, TV wall mounting, new curtains, and possibly a featured wall, installation of hanging fan
• Bedroom (master) -  New floor tiles (vinyl or wood-like tiles), built-in wardrobe
• Bedroom x2 - New floor tiles (vinyl or wood like), 1 study table in 1 of the room, 1 built in ward robe in 1 of the room. 
• Toilets - New floor (granite or other matt/rought materials) and wall tiles (Granite, ceramic or homogeneous tiles), sink/toilet bowl/vanity counter purchase + installation, glass wall
• Kitchen - New floor tiles and wall tiles, cabinet (white modern looking), kitchen top (granite or marble), new sink and cooking hobs + installation. 

I don't think my budget allows me to engage an ID, hence i'm looking for a contractor to help me with my renovation work. Any good intro?